Finding the Fourth Proportional to 76,395.76, 105,425.77 and 42,404.65

Step by Step Solution

1. Step 1: Write the proportion equation
   76,395.76 : 105,425.77 = 42,404.65 : x
2. Step 2: Convert to fraction form
   76,395.76/105,425.77 = 42,404.65/x
3. Step 3: Cross multiply
   76,395.76x = 105,425.77 × 42,404.65
4. Step 4: Simplify right side
   76,395.76x = 4,470,542,877.83
5. Step 5: Solve for x
   x = 4,470,542,877.83/76,395.76
6. Step 6: Final answer
   x = 58,518.21